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Q: Which of the following is the Galilean moon that was observed in 1610 by the Italian astronomer Galileo Galilei using a homemade telescope?
  • A. Phobos
  • B. Namaka
  • C. Ganymede
  • D. Titan
Correct Answer: Option C - Ganymede, a satellite of Jupiter, is the largest and most massive of the Solar System’s moons. It is the ninth-largest object in the Solar System, it is the largest satellite without a substantial atmosphere. Four moons of Jupiter are very large size, namely Ganymede, Callisto and Europa. • These were discovered by Galileo Galilei in 1610 AD. • Therefore, these four are also called Galilean moons of Jupiter.
C. Ganymede, a satellite of Jupiter, is the largest and most massive of the Solar System’s moons. It is the ninth-largest object in the Solar System, it is the largest satellite without a substantial atmosphere. Four moons of Jupiter are very large size, namely Ganymede, Callisto and Europa. • These were discovered by Galileo Galilei in 1610 AD. • Therefore, these four are also called Galilean moons of Jupiter.

Explanations:

Ganymede, a satellite of Jupiter, is the largest and most massive of the Solar System’s moons. It is the ninth-largest object in the Solar System, it is the largest satellite without a substantial atmosphere. Four moons of Jupiter are very large size, namely Ganymede, Callisto and Europa. • These were discovered by Galileo Galilei in 1610 AD. • Therefore, these four are also called Galilean moons of Jupiter.